import java.awt.*;
import java.awt.image.*;
import java.io.*;
import javax.swing.*;
import com.sun.image.codec.jpeg.*;
import java.text.AttributedString;
import java.awt.font.TextAttribute;
import java.text.AttributedCharacterIterator;

public class ImageUtil2 {
    /**
     * 给图片添加水印文字
     * 
     * @param filePath
     *            需要添加水印的图片的路径
     * @param markContent
     *            水印的文字
     * @param markContentColor
     *            水印文字的颜色
     * @param qualNum
     *            图片质量
     * @param fontType
     *            字体
     * @param fontsize
     *            字体大小
     * @return
     */
    public BufferedImage createMark(String filePath, String markContent,
            Color markContentColor, float qualNum, String fontType,
            int fontSize, boolean isAppendWatermark) {
        ImageIcon imgIcon = new ImageIcon(filePath);
        Image theImg = imgIcon.getImage();
        int width = theImg.getWidth(null);
        int height = theImg.getHeight(null);
        BufferedImage bimage = new BufferedImage(width, height,
                BufferedImage.TYPE_INT_RGB);

        Graphics2D g = bimage.createGraphics();
        g.setColor(markContentColor);
        g.setBackground(Color.white);
        g.drawImage(theImg, 0, 0, null);

        // 为图像添加水印文字
        if (isAppendWatermark == true) {
            AttributedString ats = new AttributedString(markContent);
            Font f = new Font(fontType, Font.BOLD, fontSize);

            ats.addAttribute(TextAttribute.FONT, f, 0, markContent.length());
            AttributedCharacterIterator iter = ats.getIterator();

            g.drawString(iter, width / 5, height / 5); // 添加水印的文字和设置水印文字出现的内容
        }

        g.dispose();

        try {
            FileOutputStream out = new FileOutputStream(filePath);
            JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
            JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bimage);
            param.setQuality(qualNum, true);
            encoder.encode(bimage, param);
            out.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return bimage;
    }
}